Dindal, Christopher
(2012)
THE EFFECT OF IMPREGNATED GLASS FIBERS ON THE FLEXURAL
STRENGTH OF ACRYLIC AND COMPOSITE RESIN: AN IN-VITRO STUDY.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
Objective: The aim of this in-vitro study is to compare flexural strength of polymethyl methacrylate (PMMA) and bis-acryl composite (BAC) resin material reinforced with impregnated glass fibers.
Materials and Methods: Two groups of rectangular test specimens (n=20) were fabricated. One group contained PMMA acrylic and the other contained bis-acryl composite resin material. The experimental groups contained impregnated glass fiber reinforcement and the non-reinforced group served as the control. Flexural strength of the specimens was measured by a universal testing machine until fracture. The mean flexural strength (N) was compared by a two way ANOVA test and followed by a simple main effect, using a significance level of 0.05.
Results: For reinforced groups, the mean flexural strength of PMMA resin increased from 349.4N (+/- 23.4) to 613.6N (+/-54.2). For BAC resin, the mean flexural strength increased from 513.6N (+/-103.1) to 603.5N (+/-50.5). Reinforced PMMA resin was highly significant (p<0.001) compared to BAC resin (p=0.150). At the non-reinforced control groups, the flexural strength BAC resin was significantly higher than PMMA resin group (p=0.036).
Conclusion: Although impregnated glass fiber increased the flexural strength of both PMMA and BAC groups, it was significantly higher for PMMA resin. At the non-reinforced control groups, the flexural strength of BAC resin was significantly higher than PMMA.
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Details
| Item Type: |
University of Pittsburgh ETD
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| Status: |
Unpublished |
| Creators/Authors: |
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| ETD Committee: |
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| Date: |
9 July 2012 |
| Date Type: |
Publication |
| Defense Date: |
27 April 2012 |
| Approval Date: |
9 July 2012 |
| Submission Date: |
19 June 2012 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Number of Pages: |
53 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
School of Dental Medicine > Dental Science |
| Degree: |
MDS - Master of Dental Science |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
Glass fibers; Flexural strength; Resin reinforcement |
| Date Deposited: |
09 Jul 2012 15:39 |
| Last Modified: |
15 Nov 2016 13:59 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/12473 |
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